Anatomical articulator for dental use



- S. H. WILSON ANATOMICAL ARTICULATOR FOR DENTAL USE Filed Aug. 51 1922 mama. 16,1923.

SAMUELHOGG i son, or eLAseo /vj see riaitn. i

ANATQMI AL ARTIG LATQR soatii iareie UsE Application file'd eugust 3:, i922. Serial 31 01 585553.

To elite/10mit may 007106771. V

Be it"knownthatL SAM- iu, P e of 1-19 Glarkst'on RomhCath H 1 Scotland, a subject ofthe 1(l1'lg of Great Britaiinhave 'ini'entedeertain new andnselj'ul lm iiroreinents in Anatomical Artieula tors for Dental Use, of which the following is a SPGClfiCfltlOll.

This inventionji'elates to anatomical artie ulators for dental use and, ha'slforitsobwctq to'iinprove and simplify the construction of such instruments so that an entirely u'ninipeded: View of; and access to, all-parts of tainable.-

in Q articulators constructed I in aceordan'ce with the invention, the nieans for-guiding,

the awsduringei erhite and crossbiteinoye ments are such that the same relative movement of the upper and lower teeth can be; obtained irrespective of anguiar adjustment of the articulator and are located at e the unctzonof the upper and low about jaws. Sueh meazis' may conform to knowncono in that such inclined 3 understood' l' hare appended a sheetgoi d1; lHIS; showing, by way o f 1 example,

or consti'uction of the .articulatorf '7 F g, 1 isa front elevatlon.

- Fig. 2 is side elevation. 1

-F1p" 3 isaplan. iFigsi 4 and 5 are enlargeddetailyv ews-- 1 Fig. '6 shows the inod el positien jwith l tor-ia s'op ..1 a, r 4r As ill be seen the articulator comprises; m "-unitedfat each -c *nprising a y i rins OVlClQCl to maliltainyt a. ns nora it 116 anally at thejlower ends and s des f0 two depending projections or thumb pieces 2',

the teeth during adjustment shall befob H e 5 secured to the pin cl andyat' 1ts lower end, To'the attainment of the aforesaid object,

' struction in that each may be inthe form one or more in'clinedplanes on one jaw and one or more eoj-acti'ng members on the other,

planes. are both, or all, on the same'jaw so; that tlierelative inclination of same remains constant irrespective of angular adjustment f I i i -be seenfroni Fig. 6.- In "order that the invention may be clearly;

one; form a; Asthe promotions of the upper aw bear s o loosely mounted Islets; 'Eaohja'w carries alpair;[o fit'apeppins e e v H I other'jfor testingqthe cross-bite of the teeth. 3

'- I j, on the upper j aw engaging vertically adjustable inclined planes icilfon thelowerf l inclined than the aforesaid slots, suitable inclinations being 27 and 23 degrees, respec tively." 'Y a Fig. 4 showsin side view, was in per;

' jaw such planes being somewhatmore steep f speetivefiview, (looking towards the left 7 hand side'lo't one of the joints to an enlarged scale and, as will be seen, the pin (Z which is screwed into the upper aw a can mmfreely in the inclined "slot (3 of thelower jaw against the constraining action of the spring f which, at its upper end, is"

to theizrwb so that the two springs resinently hold the two jaws together The provertical slot nfofthe lower flaw Z) and base gain e t Y e e I a clamping nutflo thereon. "By tightening thenut thebracket can be heldih any dee sire'dQpositiOn in the slot, 7 V I lVhen working on the teeth it is Very de sirable thatraccess should be atta ned to them;

ension (which works inthe slot) and e from the rear as-well as frointhe front in 4 order that they may be, positioned correctly,

and I obtain this result by eliminating'all crossghars 'er strutsbetween the awe and by artioulating the jawswell to the side, as w ll it'fis importantto note that the inclines 6,6 and 7,f7, a-re all on the lower aw and that]: Z, are bothadjustable intheir slots '22.

on theinclined planes la Z, and, asthe angles ofthe slots (3 and planes 70,;.Z,fdeter1nine,the 'properoverbite and cross-bite movements 11;

tollowstliat bv inovin the' lasterinodels i n p H i k-5B, the Crass-bite and over-bite of the flltl ing;.abselute ly,fr and openrat thebaclL/i I The 'goi er bite .is regulatedv b? icai and; lateral movement v whe Naif-matter how the aws are 'Inovedth'e :ratiO'between the inc-lines of e and mare I always constant.

the joints," projections upon said one jam,

Whilst I find it is advisable to have the angle of theplanes is, Z, about 27 and ot the slots 6 about 23 ,1 do not'confine myself to these angles. V V i V In operation the wax bite-block is placed in the patients mouth and the median line marked on it. The bite-bloerris then sealed on the appropriate model, and both upper and lower models A and B placed centrally on the articulator taper pins-g and h. The

bite-blocks being in contact, the height of the articulator is set by bringing'up. the

brackets until the planes 7c and Z contact with the projections 71, j, It will be observed that should there he a difference between the condoyle path on the one side from thaton the other side of the jaw one of the pivot pins dmay be raised in its slot epin such a case the corresponding bracket m will be raised more than its fellow: it will further 'be noticed that the models A and B may,

after the teeth are mounted, be removed from off the taper pins 9 and It and replaced thereon without the necessity for the adj ustmentfof parts; This arrangement has the further advantagethat=when so removed there are no parts projecting from the models as s. the case'whenithe carriers of the models are embedded therein.

desire to secure by Let-,

What I claim and 1. An anatomical articulator for dental use comprising, an upper and alower jaw constituting an open frame ointed together at the sides to permit of access to the teeth.

from the rear, pivot pinson one aw working in inclined slots in the other jaw'to'iorm V the joints, projections up'onsaid onekjaw, inclines upon said other aw co-actmgtuth said projections, and means to adjust said.

inclinesindependently towards and from said projections whereby difierences in the condoyle paths may be allowed for.

2. An anatomical articulator for dental use comprising an upper and a lower jaw constituting an open frame jointed together at the sides to permit of access to the teeth from the rear, pivot pins onvone jaw workingin inclined slotsin the other jaw toform the joint, projections upon'said one jaw, in-

clines upon said other jaw co-actingavitli said projections, brackets carrying said inclines, slots in said other jaw for thereception of said' bra ckets, A and means v to retain I SHICl brackets in said 'slots.

p anatomical rticulator for dental use comprisingan upper and a lower jawsconstituting an open framefjointed together at the sides to permit of access to D16; teeth ;from the rear; p vot. plns-pn one jaw work ing in inclined slots in the other j aw to form ,doyle pathsmay be allowed for.

position.

inclines upon said other jaw co-acting with said projections, said inclines being at a different angle from theangle of the inclined slots, and means to adjust said in clines independently towards and from said projections whereby differences in the con- 4. An anatomical articulator for dental use comprising an upper and a lower jaw constituting, an open frame jointed together at the sidesto permit of access to the teeth from the rear, pivot pinsion'one jaw working-in inclined slots in the other jaw to form the joints, projections upon said one jars ,1

inclines upon said other aw co-acting with said projections said inclines being at a diti'erent angle from the angleof the inclined slots, and means to adjust said in clines independently towards and from said projections whereby differences in the condoyle paths imay be allowed for, brackets carrying said inclines, slotsin saidv other jaws for the reception of said brackets, and

clamping nuts to clamp said brackets to said jaws in desired position.

5. An anatomical articulator for dental use, comprising an fupper and: a. lower jaw constituting an open frame jointed together at the sides to permit of access to the teeth from therearu )iVOt )llls on then 3 )er jaw inclined slots in. the lower jaw to receive said pins, and form the joints, springs to keep said pins atthe lower end of said in- I clined slots, projections depending from each side ofthe upper jaw, inclined planes.

on the'lower aw to co-act with said projecti'ons, means whereby said planes may be adjusted towards and from saidprojections and relatively. to one another.

6. Anianatomical articulator vtor dental use comprising-an upper and a lowervjaw constituting an open frame jointed togethcu at the sides to permit of access to the teeth from therear, pivot pins onthe upper j am inclined slots in the lower aw to receive said pinsand form the joints. springs tokeep v saidpins at the lower end of said inclined' slots, projections depending from each side- ;of the upper jaw, inclined planesf on the] 1 lower jaw to coact with said projections.

brackets carrying; said inclined planes and adjustable 111 slots in thelower aw towards and from said projections, and-clamping; nuts for clamping said brackets in ad usted In "testimony whereof I afliX; my signature I in presence oftwo witnesses] sAMUEL-iioee wages;

' .Witnesselsaf ll lanoginn'r H L N$9 L URA NVXL i 

